404442222031 has 4 divisors (see below), whose sum is σ = 428232940992. Its totient is φ = 380651503072.

The previous prime is 404442222017. The next prime is 404442222043. The reversal of 404442222031 is 130222244404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404442222031 - 2⁷ = 404442221903 is a prime.

It is a super-2 number, since 2×404442222031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404442222001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11895359455 + ... + 11895359488.

It is an arithmetic number, because the mean of its divisors is an integer number (107058235248).

Almost surely, 2^404442222031 is an apocalyptic number.

404442222031 is a deficient number, since it is larger than the sum of its proper divisors (23790718961).

404442222031 is a wasteful number, since it uses less digits than its factorization.

404442222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23790718960.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 404442222031 its reverse (130222244404), we get a palindrome (534664466435).

The spelling of 404442222031 in words is "four hundred four billion, four hundred forty-two million, two hundred twenty-two thousand, thirty-one".